<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">数字园区-登录</div>
      <!-- 表单校验四要素
      1.el-form  :model对应的值是表单对应的数据对象
      2.el-form  :rules对应的校验规则
      3.el-form-item prop 表示要校验哪个字段
      4.表单元素（el-input、el-checkbox...） v-model
       -->
      <el-form ref="form" :model="loginForm" :rules="rules">
        <el-form-item
          label="账号"
          prop="username"
        >
          <el-input v-model="loginForm.username" placeholder="admin"/>
        </el-form-item>

        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input v-model="loginForm.password" show-password  placeholder="admin123"/>
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="rememberMe">记住我</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="handleLogin">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import {FORM_KEY} from '@/constants/KEY.js'
export default {
  name: 'Login',
  data() {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      rememberMe: false,
      rules: {
        username: [
          /* trigger意思是校验触发条件，blur的意思是失焦会触发，change意思是内容改变会触发，两个都可作为触发校验的条件，可单独用可一起用 */
          { required: true, message:'用户名不可为空', trigger: 'blur' }
        ],
        password: [
          { required: true, message:'密码不可为空', trigger: 'blur' }
        ]
      }
    }
  },
  //组件初始化的时候，从本地取账号和密码，把账号密码存入用来双向绑定的form中
  created() {
    const loginData = localStorage.getItem(FORM_KEY)
    if (loginData) {
      const { username, password } = JSON.parse(loginData)
      this.loginForm.username = username
      this.loginForm.password = password
    }
  },
  methods: {
    handleLogin() {
      this.$refs.form.validate(async(parameter) => {
        if (!parameter) return
        /* 这种写法越过了actions直接调用了mutations，不规范
        const res = await loginAPI(this.loginForm)
        console.log(res)
        this.$store.commit('user/setToken', res.data.token) */
        await this.$store.dispatch('user/loginAction', this.loginForm)
          //判断用户是否点击了记住我
          if (this.rememberMe) {
            localStorage.setItem(FORM_KEY, JSON.stringify(this.loginForm))
          } else {
            localStorage.removeItem(FORM_KEY)
          }
          //哪个页面退出的，登录时继续跳转到对应的页面
          if (this.$route.query.redirect) {
            this.$router.push(this.$route.query.redirect)
          } else {
            this.$router.push('/')
          }
      })
    }
  }
}

</script>

<style scoped lang="scss">
  .login_body {
    display: flex;
  }
  .bg {
    width: 60vw;
    height: 100vh;
    background: url('~@/assets/login-bg.svg') no-repeat;
    background-position: right top;
    background-size: cover;
  }
  .box {
    margin: 200px 10% 0;
    flex: 1;
    .title {
      padding-bottom: 76px;
      font-size: 26px;
      font-weight: 500;
      color: #1e2023;
    }
    ::v-deep() {
      .ant-form-item {
        display: flex;
        margin-bottom: 62px;
        flex-direction: column;
      }
      .ant-form-item-label label {
        font-size: 16px;
        color: #8b929d;
      }
      .ant-input,
      .ant-input-password {
        border-radius: 8px;
      }
    }
  }
  .login_btn{
    width: 100%;
  }
</style>
